Application Manual K-FLEX IC-CLAD 1109.pdf

Via Leonardo Da Vinci, 36 - 20040 Roncello (MI) Italy 

tel.: +39 039 68241 - fax: +39 039 6824560 

e-mail: international@isolante.com - italysales@isolante.com 

www.kflex.com

GENERAL INDEX 

1 - TOOLS 

2 - TUBES 

3 - ELBOWS 

4 - “T-PIECE” 

5 - FLANGES 

6 - VALVES 

7 - REDUCERS 

8 - SMALL AND MEDIUM TANKS 

9 - LARGE TANKS 

IC CLAD Application guide 04/04 - Engl. 

IC CLAD - TOOLS 1 

01

K-FLEX IN CLAD 

APPLICATION GUIDE 

INSULATION AND FINISHING 

TOOLS 



02

INDEX 

Tools: 

- The composite product K-FLEX IC CLAD 

- The range product K-FLEX IC CLAD 

- K-FLEX IC CLAD accessories 

- The applications tools 

- Application tips for K-FLEX elastomeric material 

- Application tips for K-FLEX IC CALD finishing 

page 

04 

05 

06 

07 

08 

09 



03

K-FLEX IC CLAD is a flexible closed cell 

elastomeric insulation bonded to a robust 

outer inorganic sheet made of glass fibre 

fabtric laminated to alluminium foil. 

K-FLEX IC CLAD is composite product 

providing good flame resistance, negligible 

toxicity and impact resistance. 

The Flexible Elastomeric Foam (FEF) can 

be either K-FLEX ST or K-FLEX ECO. 

K-FLEX ECO must be used instead of 

K- FLEX ST insulation, if a very low toxicity 

is required. 

K-FLEX IC CLAD 

A tough waterproof thermal Insulation system for 

on and offshore process equipment protection 


Inorganic fibre glass 

sheet (IC/BK) 

It is avaible in the form of pre-formed flexible tube 

or sheet sections 

Inorganic laminated plate in fibre glass 

impregnated with alluminium (IC/SR) 

K-FLEX closed cells 

elastomeric insulation. 



04

K-FLEX CLAD IC/SR (K-FLEX ST or K-FLEX ECO version) with SILVER finishing. 

K-FLEX IC CLAD sheet: 

Height 1 m 

thicknesses of 6-9-13-16-19-25-35-40-50 

standard or self adhesive 

K-FLEX IC CLAD PRODUCTS 

The range of K-FLEX IC insulation products available for the user. 

The range of K-FLEX IC insulation products available for the user. 

IC CLAD finishing can be applied to K-FLEX insulation elastomeric K-FLEX ST and F-FLEX ECO. 

IC CLAD tube 

length 1 m 

thickness 13-19-25-35 

Ø friom 15 to 160 

Pre-cut with a longitundinal and head overlap, for joining to and slotting into the consecutive tube. 

IC CLAD SR /BK sheet: 

Width 1 m 

Length 25 m 

standard or self adhesive 

IC CLAD finishing can be applied to K-FLEX insulation elastomeric K-FLEX ST and F-FLEX ECO. 

K-FLEX IC CLAD / BK (K-FLEX ST or K-FLEX ECO version) with BLACK finishing. 



05

NO SI 


Practical suggestions 

Some important tips for a correct installation of K-FLEX IC CLAD insulation. 

Insulation of piping and ducts with K-FLEX elastomeric material 

NO 

Before applying the insulating material, clean the pipe surface thoroughly. 

Avoid applying the insulating material in presence of deposits or defects that may prevent a 

perfect adhesion. 

Should you deem it necessary, clean the surface with K-FLEX thinners. 

Always use sharpe blades to cut the insulating material cleanly and accurately, so as to 

prevent any clippings or tearing. 

Do not create tension while settling the elastomeric material on the side to be insulated. 

Always seal the the joints of the K-FLEX insulating material with the correct K-FLEX 

ADHESIVE.. 

Do not apply insulating material in the rain, in humid environments 

or in the presence of humidity which may prevent a solid adhesion. 

Never insulate installations and systems whilst in use.. 

After having completed the insulation, before starting the installation, check the strength of 

the joints. In the event of losses, wait at least 36 hours before carrying out further checks 

The blue lines 

indicate the joints 

glued with K 420 

adhesive. 



08

NO SI 


Practical suggestions 

Some important tips for a correct installation of the K-FLEX IC CLAD finishings. 

Application of the K-FLEX IC CLAD finishing layer 

NO 

Always use sharp blades to cut the insulating material cleanly and accurately, so as 

to prevent any clippings or tearing of the finishing layer. 

Always carry out overlapping against water to avoid infiltrations and stagnations; 

for aesthetic purposes, face the overlappings out of sight. 

For the application of the IC CLAD sheet, if it is not already self adhesive, use 

K 420 ADHESIVE. 

For fixing and finishings, only use the specific IC CLAD tapes. 

For external applications, the edges of the fixings and the tapes must be sealed 

with marine silicone. 

Do not carry out the application of the IC CLAD finishing in the rain or apply the 

specific insulation tape in wet environments or in the presence of humidity, which 

may prevent a solid adhesion. 

The green and 

yellow lines 

indicate: 

Glued overlapping 

part of the finishing 

Edge sealed with 

marine silicone 



09




TUBES 

IC CLAD guida per l’applicazione 03/04 - Engl. 

IC CLAD - TUBES 02 

2

INDEX 

Tubes: insulation and finishing with IC CLAD sheet 

K-FLEX IC CLAD - TUBES 

- Introduction: K-FLEX insulating tubes- Application reference - Key 

Insulation with K-FLEX elastomeric sheet or tube 

Application of IC CLAD SR / BK finishing sheet 

on tubes insulated with K-FLEX elastomer 

The use of K-FLEX sheet with IC CLAD finishing already applied 

Pre-cut tube with SR o BK finishing already applied 

Photographic sequence of installation 

page 

03 

04 

06 

11 

19 

23 



2

For procedure details reletive to the 

application of K-FLEX insulating tubes, 

refer to the “ K-FLEX APPLICATION 

GUIDE” in the relevant sections. 

Application guide 

If you are not in possession of a 

printed guide you can ask for it at our 

technical office or download the pdf 

file from our website: 

www.kflex.com 

K-FLEX IC CLAD - TUBE 

Insulation and finishing 

All the operations described can be carried out with 

the selected insulation material: K-FLEX ST or K-FLEX ECO 

K-FLEX ST elastomeric insulation 

K-FLEX ECO elastomeric insulation 

In the application sequence the 

IC CLAD SR (Silver) sheet is represented. 

The indications are also the same for the use of 

IC CLAD BK (Black) sheet. 

K-FLEX IC CLAD APPLICATION GUIDE 

KEY OF RECURRING GRAPHIC SYMBOLS 

Joints glued with K 420 adhesive 

Edges sealed with marine silicone 

Direction of movement with arrow: 

to indicate the action carried out during 

the application of the insulation or of 

the finishing 

measurements to be taken 



2

Circumference of the piping 

Laying of K-FLEX elastomeric insulating sheet 

Length of the insulation section 



A) 

Cut from a K-FLEX insulating sheet a section corresponding to the dimensions 

of the piping to insulate and glue the joining edges with K 420 adhesive. 

Take the measurements of the circumference wrapping around the piping 

a strip of elastomeric insulation of the thickness that you are using. 

B) 

Place the sheet on the piping and close the longitudinal joints. Press the glued edges carefully together in order to 

obtain an even joint, without stretch marks. 

KEY: Adesivo K 420 Marine silicone Measurements Actions 

Laying of K-FLEX elastomeric 

insulation tube 

• Lay the insulation tube after having 

cut it lengthwise. 

• Close the tube again fixing the edges 

of the cut with K 420 adhesive. 

The laying procedure is the same as that illustrated 

for the K-FLEX sheet. 



2

Laying of the two consecutive K-FLEX elastomeric sheet or tube 

Before proceeding to the appliance of the IC CLAD finishing it is 

advisable to carry out the complete insulation of a specific 

part of the plant. 



A) 

Following the assembling procedure on the previous page, lay the next sheet section or insulation tube on the piping. 

B) 

Fix the joining edges of the two elastomeric sections with K 420 adhesive. IC CLAD guida per l’applicazione 

C) 

03/04 - 

Bring into contact the two sections and close the longitudinal joints carefully pressing together the glued edges in order to obtain an even result, without stretch marks. 

Engl. 

KEY: K 420 adhesive Marine silicone Measurements Actions 


2

Laying of the IC CLAD SR / BK standard finishing sheet 

A 

Circumference of the insulation 

+5 cm 

Length of the insulation tube 

B) 

Place the sheet on the piping arranging the 

longitudinal joints against water. 

C) 

Glue the joining edges with K 420 adhesive. 

D) 

Close the joints. 

Fix the edges with the specific IC CLAD adhesive tape. 


Application of the IC CLAD SR / BK finishing sheet 

on tube insulated with K-FLEX elastomer 


A) 

Cut from an IC CLAD sheet a section of a height corresponding to the circumference of the insulation tube 

plus 5 cm of abundance for the overlap, and of the length of the insulation section to cover. 

B 

C 

D 



2

+5 cm 

Circumference of the insulated tube + abbundance 

+5 cm 

Laying of consecutive sections of sheet. 

A) 

After having placed a sheet section (1) on the first insulated 

section, following the procedure illustrated on the previous 

page, we will see how to prepare the next section. 

Preparation for laying sheet II 

Length of sheet B 




I 

I 

B) 

Cut another section of IC CLAD sheet the same circumference 

as the previous one (II). 

Leave an overlap abbundance of 5 cm also 

on the longitudinal joints and on the joints with sheet I, 

already placed. 


II 



2

Apply K-420 adhesive for fixing the parts where overlapping 

occurs, longitudinal (L) and on the top for the 

superimposition of sheet I (T). 





+5 cm 

T 

I II 

+5 cm 

L 

Contact face (reverse) 



2

A) 

Place sheet II in a way to overlap sheet I. 

Turn the longitudinal overlap against water and out of sight. 

Keep the joining line in a different position compared to that of sheet I. 

B) 

Close sheet II with controlled presure on the overlapping areas. 




I II 

I 


A 

B 

II 



2




A 

Fix the joints with the specific IC CLAD adhesive tape of an adequate width. Place the edges of the tape against water (A1). 

B 

For external applications, if necessary, seal all the edges of the adhesive tape with marine silicone. 


A 

B 

A1 



2

Preparation of a length of tube 

A) 

Cut a section from a K-FLEX IC CLAD sheet corresponding to the circumference of the piping 

to insulate, with an abbundance of 5 cm, for the overlapping of the edges. 

A 


Length of the IC CLAD sheet section 

B) 

Remove a strip of 5 cm from the elastomeric layer 

where the abundance is, leaving the IC CLAD sheet intact. 

For the operation, make a clean cut in the elastomer and remove 

the remaining material with a scraper. 


+5 cm 


Use of the K-FLEX sheet with IC CLAD finishing already applied 

B 

+5 cm 

The illustration shows the operation for obtaining 

the necessary overlap for the superimposition of the joints. 

• As a makeshift solution, without doubt less effective, cut a sheet section without leaving an abbundance 

and simply cover the joints with IC CLAD adhesive, following the specific appliance rules. 



2

Laying of tube I 

A) 

Place the prepared sheet on the piping 

to check the dimensions. 

Turn the closure of the overlap 

against water. 

B) 

Glue the joining edges of the 

elastomerico layer with K 420 

adhesive. 

A) 

Join the edges of the elastomer 

pressing carefully to obtain an even 

closure without stretch marks. 


K-FLEX IN CLAD - TUBE 




2

A) 

Glue the overlap with K 420 adhesive. 

A) 

Close the overlap using careful 

pressure to obtain an even closure 

without stretch marks. 

B) 

Fix the joints with a strip of specific 

IC CLAD adhesive tape. 






2

Preparation of the consecutive tube II 

A) 

Cut from a K-FLEX IC CLAD sheet the section corresponding to the circumference of the piping to insulate , including 

an abundance of 5 cm for the overlap of the longitudinal joint. 

Leave another abundance of 5 cm on the side of the joint with the tube already laid. 

II I 


A 

+5 cm 


B) 








+5 cm 

+5 cm 

B 

+5 cm 

The illustration shows the operation to obtain the 

overlap necessary for the joints. 

• As a makeshift solution, without doubt less effective, cut a sheet section without leaving an abundance 

and simply cover the joints with IC CLAD tape, following the specific appliance rules. 



2

Laying of tube II 

B 

C 



II 

II 

A) 

Lay tube II in line with tube I. 

Glue with K 420 adhesive the edges of the logitudinal joints of the elastomer. 

B) 

Shut the closure of the elastomer. 


C) 

Glue the elastomeric heads of the two tubes with K 420 adhesive (C1). 

With K 420 adhesive, glue the internal walls of the overlap and the head of tube I 

(C2) which will be superimposed by the overlap. 

C1 

C2 

I 

I 



2


Push tube II against tube I (A1), until the heads of the 

elastomer which must firmly adhere, touch. 

It may be useful to make cuts in the overlap to facilitate 

the insertion of tube I (A2). 

Fix the ends of tube I to the walls of the female overlap 

of tube II. 



A1 

II I 


A2 

II I 



2

A) 

Glue with K 420 adhesive the longitudinal overlap of tube II. 

B) 

Shut the longitudinal closure at the completion of the installation. 

A 

B 



II I 




2

A) 

Fix the longitudinal joints with the specific IC CLAD adhesive tape. 

B) 

Apply the specific IC CLAD adhesive tape around the head joints of the two tubes. 

Turn the overlap of the tape against water. 



A B 

In the application sequence, the IC CLAD SR (Silver) finishing is represented. 

The indications are also the same for the use of the IC CLAD BK (Black) finishing. 

C) 

For external applications, if necessary, seal all the visible joints of the finishing and the edges of the tapes with marine silicone. 


C 



2

A) 

The finishing of the product is equiped with an adhesive overlap, 

with male-female extremities, to allow slotting into other tubes (A1). 

The pre-cut tube is also equipped with an adhesive overlap to close 

the longitudinal cut (A2) 

A1 A1 

B) 

Open the pre-cut tube and place it on 

the section of piping to be covered. 

Glue the cut edges of the elastomer 

with k 420 adhesive. 

The operation can be easily carried out even 

on a working bench. 

In that case the K FLEX IC CLAD tube will 

be installed on the piping ready to be closed. 

C) 

Leaving the longitudinal overlap free, 

join the edges of the elastomer applying 

the correct pressure to obtain an even 

adhesion, without stretch marks. 




A1 

A 

B 

C 

A2 



2

A 

Remove the protective silicone film 

of the overlap (A1), 

except for the last centimeters 

corresponding with the protruding side 

of the overlap on the head (A2). 

B 

Close the longitudinal overlap strip, 

except for the last part that has kept the 

protection. 

This trick will reveal itself useful for helping 

insertion of the next tube in line. 




A2 

A 

B 

A1 



2

A 

With the same procedure illustrated so far, arrange the next tube in line 

(II), with the male part turned towards the female part of the first tube (I). 

In order to obtain a firmer hold is is advisable not to align the two 

longitudinal joints (A1-A2). 

B 

Apply K 420 adhesive on both the joining ends of the elastomer. 

Remove the protective silicone film from the internal 

wall of the female overlap(B1). 

tubo II 




A1 

A 

B 

B1 

A2 

C 

tubo I 

C1 

C 

Push the tube II in the overlap of the tube’s head 

I facilitating entry by loosening the parts that have 

not already been fixed (C1). 



2

A B 

A 

Remove the marginal part of the remaining silicone film and close the 

adhesive female part onto the male part. 

B 

Close the end of the overlap strip 

to complete the joining between the two tubes. 




C1 

C 

C3 

D 

C2 

C 

Fix the joints with the specific IC CLAD adhesive 

tape, of an adequate width (C1-C2-C3). 

Turn the joints of the tape (C3) against water. 

D 

For external applications, seal the visible joints and 

edges of the tapes with marine silicone. 



2




TUBES 



2

INDEX 

Tubes: insulation and finishing with IC CLAD sheet 

K-FLEX IC CLAD - TUBES 

- Introduction: K-FLEX insulating tubes- Application reference - Key 


Application of IC CLAD SR / BK finishing sheet 

on tubes insulated with K-FLEX elastomer 

The use of K-FLEX sheet with IC CLAD finishing already applied 



page 

03 

04 

06 

11 

19 

23 



2

For procedure details reletive to the 

application of K-FLEX insulating tubes, 

refer to the “ K-FLEX APPLICATION 

GUIDE” in the relevant sections. 


If you are not in possession of a 



file from our website: 

www.kflex.com 





K-FLEX ST elastomeric insulation 

K-FLEX ECO elastomeric insulation 

In the application sequence the 

IC CLAD SR (Silver) sheet is represented. 

The indications are also the same for the use of 

IC CLAD BK (Black) sheet. 








the finishing 




2


Laying of K-FLEX elastomeric insulating sheet 

Length of the insulation section 



A) 

Cut from a K-FLEX insulating sheet a section corresponding to the dimensions 

of the piping to insulate and glue the joining edges with K 420 adhesive. 

Take the measurements of the circumference wrapping around the piping 

a strip of elastomeric insulation of the thickness that you are using. 

B) 

Place the sheet on the piping and close the longitudinal joints. Press the glued edges carefully together in order to 

obtain an even joint, without stretch marks. 

KEY: Adesivo K 420 Marine silicone Measurements Actions 

Laying of K-FLEX elastomeric 

insulation tube 

• Lay the insulation tube after having 

cut it lengthwise. 

• Close the tube again fixing the edges 

of the cut with K 420 adhesive. 

The laying procedure is the same as that illustrated 

for the K-FLEX sheet. 



2

Laying of the two consecutive K-FLEX elastomeric sheet or tube 

Before proceeding to the appliance of the IC CLAD finishing it is 

advisable to carry out the complete insulation of a specific 

part of the plant. 



A) 

Following the assembling procedure on the previous page, lay the next sheet section or insulation tube on the piping. 

B) 

Fix the joining edges of the two elastomeric sections with K 420 adhesive. IC CLAD guida per l’applicazione 

C) 

03/04 - 

Bring into contact the two sections and close the longitudinal joints carefully pressing together the glued edges in order to obtain an even result, without stretch marks. 

Engl. 



2

Laying of the IC CLAD SR / BK standard finishing sheet 

A 

Circumference of the insulation 

+5 cm 

Length of the insulation tube 

B) 

Place the sheet on the piping arranging the 

longitudinal joints against water. 

C) 

Glue the joining edges with K 420 adhesive. 

D) 

Close the joints. 

Fix the edges with the specific IC CLAD adhesive tape. 





A) 

Cut from an IC CLAD sheet a section of a height corresponding to the circumference of the insulation tube 

plus 5 cm of abundance for the overlap, and of the length of the insulation section to cover. 

B 

C 

D 



2

+5 cm 

Circumference of the insulated tube + abbundance 

+5 cm 

Laying of consecutive sections of sheet. 

A) 

After having placed a sheet section (1) on the first insulated 

section, following the procedure illustrated on the previous 

page, we will see how to prepare the next section. 

Preparation for laying sheet II 

Length of sheet B 




I 

I 

B) 

Cut another section of IC CLAD sheet the same circumference 

as the previous one (II). 

Leave an overlap abbundance of 5 cm also 

on the longitudinal joints and on the joints with sheet I, 

already placed. 


II 



2

Apply K-420 adhesive for fixing the parts where overlapping 

occurs, longitudinal (L) and on the top for the 

superimposition of sheet I (T). 





+5 cm 

T 

I II 

+5 cm 

L 

Contact face (reverse) 



2

A) 

Place sheet II in a way to overlap sheet I. 

Turn the longitudinal overlap against water and out of sight. 

Keep the joining line in a different position compared to that of sheet I. 

B) 

Close sheet II with controlled presure on the overlapping areas. 




I II 

I 


A 

B 

II 



2




A 

Fix the joints with the specific IC CLAD adhesive tape of an adequate width. Place the edges of the tape against water (A1). 

B 

For external applications, if necessary, seal all the edges of the adhesive tape with marine silicone. 


A 

B 

A1 



2

Preparation of a length of tube 

A) 

Cut a section from a K-FLEX IC CLAD sheet corresponding to the circumference of the piping 

to insulate, with an abbundance of 5 cm, for the overlapping of the edges. 

A 



B) 






+5 cm 



B 

+5 cm 

The illustration shows the operation for obtaining 

the necessary overlap for the superimposition of the joints. 

• As a makeshift solution, without doubt less effective, cut a sheet section without leaving an abbundance 

and simply cover the joints with IC CLAD adhesive, following the specific appliance rules. 



2

Laying of tube I 

A) 

Place the prepared sheet on the piping 

to check the dimensions. 

Turn the closure of the overlap 


B) 

Glue the joining edges of the 

elastomerico layer with K 420 

adhesive. 

A) 

Join the edges of the elastomer 

pressing carefully to obtain an even 

closure without stretch marks. 


K-FLEX IN CLAD - TUBE 




2

A) 

Glue the overlap with K 420 adhesive. 

A) 

Close the overlap using careful 

pressure to obtain an even closure 

without stretch marks. 

B) 

Fix the joints with a strip of specific 

IC CLAD adhesive tape. 






2

Preparation of the consecutive tube II 

A) 

Cut from a K-FLEX IC CLAD sheet the section corresponding to the circumference of the piping to insulate , including 

an abundance of 5 cm for the overlap of the longitudinal joint. 

Leave another abundance of 5 cm on the side of the joint with the tube already laid. 

II I 


A 

+5 cm 


B) 








+5 cm 

+5 cm 

B 

+5 cm 

The illustration shows the operation to obtain the 

overlap necessary for the joints. 

• As a makeshift solution, without doubt less effective, cut a sheet section without leaving an abundance 

and simply cover the joints with IC CLAD tape, following the specific appliance rules. 



2


B 

C 



II 

II 

A) 

Lay tube II in line with tube I. 

Glue with K 420 adhesive the edges of the logitudinal joints of the elastomer. 

B) 

Shut the closure of the elastomer. 


C) 

Glue the elastomeric heads of the two tubes with K 420 adhesive (C1). 

With K 420 adhesive, glue the internal walls of the overlap and the head of tube I 

(C2) which will be superimposed by the overlap. 

C1 

C2 

I 

I 



2


Push tube II against tube I (A1), until the heads of the 

elastomer which must firmly adhere, touch. 

It may be useful to make cuts in the overlap to facilitate 

the insertion of tube I (A2). 

Fix the ends of tube I to the walls of the female overlap 

of tube II. 



A1 

II I 


A2 

II I 



2

A) 

Glue with K 420 adhesive the longitudinal overlap of tube II. 

B) 

Shut the longitudinal closure at the completion of the installation. 

A 

B 



II I 




2

A) 

Fix the longitudinal joints with the specific IC CLAD adhesive tape. 

B) 

Apply the specific IC CLAD adhesive tape around the head joints of the two tubes. 

Turn the overlap of the tape against water. 



A B 

In the application sequence, the IC CLAD SR (Silver) finishing is represented. 

The indications are also the same for the use of the IC CLAD BK (Black) finishing. 

C) 

For external applications, if necessary, seal all the visible joints of the finishing and the edges of the tapes with marine silicone. 


C 



2

A) 

The finishing of the product is equiped with an adhesive overlap, 

with male-female extremities, to allow slotting into other tubes (A1). 

The pre-cut tube is also equipped with an adhesive overlap to close 

the longitudinal cut (A2) 

A1 A1 

B) 

Open the pre-cut tube and place it on 

the section of piping to be covered. 

Glue the cut edges of the elastomer 

with k 420 adhesive. 

The operation can be easily carried out even 

on a working bench. 

In that case the K FLEX IC CLAD tube will 

be installed on the piping ready to be closed. 

C) 

Leaving the longitudinal overlap free, 

join the edges of the elastomer applying 

the correct pressure to obtain an even 

adhesion, without stretch marks. 




A1 

A 

B 

C 

A2 



2

A 

Remove the protective silicone film 

of the overlap (A1), 

except for the last centimeters 

corresponding with the protruding side 

of the overlap on the head (A2). 

B 

Close the longitudinal overlap strip, 

except for the last part that has kept the 

protection. 

This trick will reveal itself useful for helping 

insertion of the next tube in line. 




A2 

A 

B 

A1 



2

A 

With the same procedure illustrated so far, arrange the next tube in line 

(II), with the male part turned towards the female part of the first tube (I). 

In order to obtain a firmer hold is is advisable not to align the two 

longitudinal joints (A1-A2). 

B 

Apply K 420 adhesive on both the joining ends of the elastomer. 

Remove the protective silicone film from the internal 

wall of the female overlap(B1). 

tubo II 




A1 

A 

B 

B1 

A2 

C 

tubo I 

C1 

C 

Push the tube II in the overlap of the tube’s head 

I facilitating entry by loosening the parts that have 

not already been fixed (C1). 



2

A B 

A 

Remove the marginal part of the remaining silicone film and close the 

adhesive female part onto the male part. 

B 

Close the end of the overlap strip 

to complete the joining between the two tubes. 




C1 

C 

C3 

D 

C2 

C 

Fix the joints with the specific IC CLAD adhesive 

tape, of an adequate width (C1-C2-C3). 

Turn the joints of the tape (C3) against water. 

D 

For external applications, seal the visible joints and 

edges of the tapes with marine silicone. 



2




ELBOWS 


IC CLAD - ELBOWS 01 

3

INDEX 

K-FLEX IC CLAD - ELBOWS 

Elbows: insulation and finishing with IC CLAD sheet 

- Introduction: K-FLEX elbows - Application references - Key 

Installation of K-FLEX ST / K-FLEX ECO pre-shaped elbows 

Finishing of elbows with IC CLAD sheet 

- How to prepare the outlines in segments for the elbows. 

- Which outline to choose. 

- How to fix the joints of the outlines in segments. 

Installation of pre-shaped K-FLEX IC CLAD elbows 


page 

02 

03 

04 

05 

06 

09 

11 



3

For the application procedures of 

K-FLEX insulating elbows 

prepared by the installer with 

sheet sections, see the relevant 

sections of the K-FLEX 







L’ISOLANTE K-FLEX allows you to purchase the K-FLEX elbows, pre-cut according 

to the required diameter and thickness 

The K-FLEX pre-cut elbows offer undeniable benefits for the work of the installer: 

• EASIER OPERATIONS 

• MORE ACCURATE AND SATISFACTORY EXECUTION 

• CLEANER WORK AND REDUCED WASTE 

• TIME AND LABOUR COSTS SAVINGS 

If you are not in possesion of a 



file from our website 

www.kflex.com 

Ther K-FLEX K 90 pre-cut elbows are 

shaped by mechanical methods on 

computerized diagrams and thier 

precision allows for perfect installation. 

The K-FLEX IC CLAD finishing of the 

insulation elbows shoud be prepared 

by the installer with the specific IC 

CLAD SR / BK sheet. 

The procedure is illustrated in this 

section. 

In the application sequence, the IC CLAD SR (Silver) finishing is 

represented. 

The indications are also the same for the use of the 

IC CLAD BK (Black) finishing. 








the finishing 


K 90 ELBOWS 

K-FLEX ST / ECO 



3

Installing K-FLEX pre-shaped elbows is extremely easy: 

A) Place the K-FLEX elbow around the piping. 

B) With K 420 adhesive, glue the edges of the throat and connect them. 


Installation of pre-shaped K-FLEX elbows 

C) Having completed the elbow, proceed to the application of the tubes, gluing the joints with K 420 adhesive. 

A B C 


For the preparation of insulating elbows 

by the installer with sections of K-FLEX 

sheets consult the “K-FLEX 

APPLICATION GUIDE” in the relevant 

section. 



3

How to arrange the finishing shapes for the elbow. 


Finishing of elbows with 

IC CLAD SR / BK sheet 

A) After having prepared an insulated elbow, pre-cut or completely prepared by the fitter, and having insulated the adjacent tubes, apply the finishing to the insulated tubes 

leaving an abbundance of 5 cm (A1-A2) to allow for the superimposition of the elbow finishing. 

B) Apply the sections of shaped IC CLAD SR (silver colour) or BK (black colour) sheet on the elbow. For the type of shape see the example on the following page. 

For the joints of the shapes, overlap the abundances prepared in advance “against water”, for this reason the mounting sequence of the shaped parts is carried out 

starting from the lowest part (see numbering 1-2-3-4,referring to an elbow finishing in 4 sections). 

A 

A2 

A1 


B 

1 

2 

3 

4 

In the case of a different 

position of the elbow, especially 

on tubes installed externally, 

all the overlappings should be 

placed “against the water”. 



3

CLAD guida per l’applicazione 01/04 - I 

Which shape to choose. 




The longitudinal joints of the elbow can be carried out in three different ways, with the relevant overlapping: 

A) EXTERNAL-DORSAL joint 

B) INTERNAL-THROAT joint 

C) SIDE joint 

Each of the three elbow types require diversifying shape, obtainable from the appropriate template. 

A B C 




3

How to fix the joints of the IC CLAD elbows 

K-FLEX IC CLAD - CURVE 



Each shaped section should be closed around the insulated elbow, joining the overlappings already preparedi, with K 420 (A-B-C) adhesive. 

The same adhesive is used to glue the two head overlappings of the elbow in contact with the tubes (D). 

A B C 


D 


B) INTERNAL-NECK joint 

C) SIDE joint 



3


Fix all the joints with the specific IC CLAD (A-B-C) adhesive tape. 

Also the joints of the tapes must be turned towards water and out of sight. 




A B C 


D 



C) SIDE joint 



3


K-FLEX IC CLAD - CURVE 



For external applications, IF NECESSARY, seal all the visible joints and the edges of the tapes with marine silicone. 

A B C 




C) SIDE joint 



3


Installation of pre-shaped 

K-FLEX IC CLAD SR / BK elbows 

The IC CLAD pre-shaped elbows have the IC CLAD finishing sheet applied in sections. 

They are all cut on the underside with an abundance for the overlapping of the finishing sheet. 

They also have an overlap for the closure on the heads. 

INSTALLATION: 

A-B) After having laid the tubes, install the pre-cut IC CLAD elbow. 

C) Glue the elastomer edges with K 420 adhesive. 

D) Close the elastomer edges. 

A B D 

C 




3

A) Remove the protective silicone paper; 

close the neck overlappings, those of the sections and those of the tops of the tubes. 

B) Fix all the joints with IC CLAD adhesive tape.Turn the joints of the tapes against water. 


Installation of pre-shaped 

K-FLEX IC CLAD SR / BK elbows 

C) Foe external applications, seal the visible joints and the edges of the tapes with marine silicone. 

A B C 




3

Installation sequence of a K-FLEX elbow and finishing with IN CLAD sheet. 



3




“T-PIECE” 


IC CLAD - “T-piece” 01 

4

INDEX 

“T-PIECE”: insulation and finishing with IC CLAD sheet 

- Introduction: “T” K-FLEX - Application references - Key 

“T-piece” finishing 

Which shape to choose 

“T-piece” finishing with the connection placed over the tube 

“T-piece” finishing with the connection placed under the pipe 

installation of pre-shaped “T-piece” with IC CLAD finishing 

Photographic sequence of application 

K-FLEX IC CLAD - “T-PIECE” 

page 

03 

04 

05 

08 

11 

17 



4

K-FLEX IC CLAD - “T-piece” 

insulation and finishing 

L’ISOLANTE K-FLEX offers the possibility to purchase the pre-cut K-FLEX 

“T-pieces”, according to the required diameter and thickness 

The pre-cut K-FLEX “T-piece” offer undeniable benefits for the work of the installer: 

• EASIER OPERATIONS 

• MORE ACCURATE AND SATISFACTORY EXECUTION 

• CLEANER WORK AND REDUCED WASTE 

• TIME AND LABOUR COSTS SAVINGS 

For the application procedures of 

K-FLEX insulating elbows 

prepared by the installer with 

sheet sections, see the relevant 

sections of the K-FLEX 



If you are not in possesion of a printed 

guide you can ask for it at our 



www.kflex.com 



In the application sequence, the IC CLAD SR (Silver) is 

represented. 



“T” K 90 K-FLEX ST / ECO 

The K-FLEX K 90 pre-cut 

“T-piece” connections 

are shaped by mechanical 

methods on computerized 

diagrams and thier precision 

allows for perfect installation. 

The K-FLEX IN CLAD finishing of the elastomeric “T-pieces” 

should be prepared by the installer with the specific sheet in 

polimeric fiber. 

The procedure is illustrated in this section. 








the finishing 

Measurements to be taken 



4

Which shape to choose 


Finishing of “T-piece” with IC CLAD sheet 

The application of the K-FLEX IC / IN CLAD sheet on the “T-piece” ramifications requires the use of appropriate templates for the 

shaping of the connections. 

The templates are available in standard dimensions of two specific types: 

A-Template for connection with equal diameters. 

B-Template for connection with different diameters. 

A B 



4



A) From a section of K-FLEX IC / IN CLAD sheet, cut out the equivalent of the surface of the insulated pipe plus an abundance for the overlap. 

Corresponding to the connection, form half an indented hole in a circular shape the same as that of the insulated tube. 

B) Place the shape around the connecting piping.The indentation should open up on the connecting “T-piece”. 

Seal the logitudinal edges of the sheet glueing the excess with K 420 adhesive. 

With the same adhesive also glue the indentation on the connecting tube. 

abbundance 

circumference of the tube 

A B 




4



- type 1, with side joint template. 

A) With the appropriate template, trace the shape of the conection on a section of specific K-FLEX IC / IN CLAD sheet 

leaving an excess of 5 cm for the overlap. 

B) Cut out the shape along the plan. 

C) Place the shape around the outline of the connecting piping 

Fix the longitudinal edges of the sheet, glueing the overlap with K420 adhesive. 

A 

a 

B C 




4



- type no. 2, with front joint template. 

A) With the appropriate template, trace the shape of the conection on a section of specific K-FLEX IC / IN CLAD sheet 

leaving an excess of a least 5 cm for the overlap.. 


C) Place the shape around the outline of the connecting piping. 

Fix the longitudinal edges of the sheet, glueing the overlap with K 420 adhesive. 

A B C 




4

A B 



A) With the appropriate template, trace on a section of K-FLEX IC CLAD sheet, the shape correspoding to the surface of the connection, 

plus an abundance of at least 5 cm for the overlap.Along the curves, form the indentation. 


B) Place the shape around the connection of the piping.The perforation should open up on the connection. 

Fix the longitudinal edges of the sheet, glueing the overlap with K 420 adhesive. 

With the same adhesive also glue the indetation around the connection. 


C 



4

A 


“T-piece” finishing with the connection placed under the tube 

A) On a section of specific K-FLEX IC / IN CLAD sheet a),equivalent of the surface of the insulated pipe plus an overlap abundance, 

trace the shape of the connection and cut out the shape along the plan. 

B) Install the shape around the joint of the connecting piping, overlapping it on the previously placed indentation. 

Fix the logitudinal edges of the sheet b) glueing the overlap with K 420 adhesive. 

abundance 

circumference of tube 


B 



4

Fix all the visible joints with the specific IC CLAD adhesive tape. 

For external applications, if necessary, seal the edges of the joints with marine silicone. 


“T-piece” finishing: fixing of the joints for external applications 




4

The pre-shaped and pre-cut “T-pieces”, have the IC CLAD finishing sheet already applied. 

They also have a longitudinal cut with an overlap for fixing the finishing. 

They also include an overlap for fixing on the heads. 

INSTALLATION 

A) Install the 3 adjacent tubes, leaving sufficient space to 

facilitate placing the “T-piece”. 

B) If you wish to make “V” cuts in the finishing of the head 

overlappings, to facilitate adhesion with the heads of the 

tubes, the operation should be carried out before installing 

the “T-piece” and even before applying the adhesive on the 

elastomeric parts. 


Installation of “T-piece” with IC CLAD finishing 


A 

B 



4

INSTALLATION 

C) Glue the the tops of the tubes with K 420 adhesive. 

D) Glue the elastomeric tops of the “T-piece”. 

E) Place the K-FLEX IC CLAD “T-piece” 

placing the top overlappings of the “T-piece” 

to the 3 tops of the tubes already installed. 

Close the elastomeric tops of the “T-piece” with those of 

the tubes. 

D 


Installation of pre-shaped “T-pieces” with IC CLAD finishing 


C 

E 



4

F) Glue the elastomer edges with con 

K 420 adhesive. 

G) Close the elastomer edges 


Installation of pre-shaped “T-piece” with IC CLAD finishing 


F 

G 



4

H) Remove the protective silicone paper 

of the top overlappings and close them to the 

tops of the tubes. 

It is advisable to carry out the operation in 

three successive stages (E1, E2, E3) to facilitate 

the respective fixing. 

I) The procedure is the same if “V” cuts were made 

in the overlappings to help adhesion to the top of 

the respective tube. 




E3 

E1 

E2 

H 

I 



4

L) Remove protective silicone paper from the 

longitudinal overlappings. 

M) Close the superimpositions of the longitudinal 

overlappings to complete the closure of the 

“T-piece”. 




L 

M 



4

N) Fix all the joints with the specific adhesive tape. 

The superimpositions of the tapes should be turned 


O) For external applications, if necessary, 

seal the joints and the edges of the tapes with 

marine silicone. 




N 

O 



4



4




FLANGES 


IC CLAD - FLANGES 01 

5

INDEX 

Flanges: Insulation and finishing with IC CLAD sheet 

- Introduction: K-FLEX Flanges - Application references - Key 

Flange finishing placed on horizontal piping 

Flange finishing placed on vertical piping 

Pre-shaped flange finishing 

Photographic sequence of the application 

K-FLEX IC CLAD - FLANGES 

page 

03 

04 

08 

11 

13 



5

For a detailed preparation of the 

insulation of flanges, 

see the relevant sections of the ”K-FLEX 

APPLICATION GUIDE”. 

Guida per l’applicazione 





www.kflex.com 

K-FLEX IC CLAD - FLANGE 





represented. 










the finishing 




5

Finishing of adjacent tubes 

• Prepare two sheet sections a) and b) of a corresponding length to the 

surface of the adjacent insulated parts, including the necessary excess of 

5 cm for the overlap and cut out the indentation on the side in contact 

with the flange. 

• Wrap the sections to the insulated tubes resting the indentation against 

the flange disks, in order to obtain perfect adhesion. 

• With K 420 adhesive, glue the longitudinal overlap and the indentation 

in contact with the flange, against water. 




a b 

Abundance 



5

Finishing of the lateral disks 

A) 

Prepare two equal sections of IC / IN CLAD sheet 

and trace on each a indentated ring of a diameter 

corresponding to the disks of the flange a). 

The diameter b) defines the limit of the external profile of 

the indentation. 

The diameter of the hole c) corresponds to that of the pipe 

already finished on which the indentated ring should be installed 

The tracing should include a cut d) for the installation 

of the rings on the respective tube. 



B) 

After having cut out the complete tracing of each ring, 

place it on the respective pipe so that it appears adherent 

a 

to the disk of the flange and covers the indentation of the sheet of 

the pipe previously mounted. 

B C 

a 

c 


A 

b 

c 

d 

C) On the parts in contact 

with the flange, fix the disk 

with K 420 adhesive all along 

the delimitation areas of the 

diameters and of the cuts. 



5

Finishing of the flange body 

B) 

Cut a section of K-FLEX IC / IN 

CLAD sheet of a dimension calculated 

to cover the external part of the 

valve’s body, closing the lower 

indentation. 

The covering sheet should have an 

excess to allow overlapping (b1). 

Apply the sheet section around the 

valve’s body with the overlapping edge 

turned against water. 

Glue the joints with K 420 adhesive 

(b2). 

b1 

Abundance 



A) 

Glue the indentations with K 420 adhesive, bend them along the circumference and fix them 

on the body of the flange. 


B 

A 

b2 

a1 



5

Finishing of the flange body 

A) 

Fix all the joints with the specific IC LAD adhesive tape. 

B) 

Foe external applications, if necessary, seal the edges of the tapes 


A 

B 






5

A) 

Cut a section of K-FLEX IC / IN CLAD sheet of a length corresponding to the 

surface of the insulated tube plus 5 cm of excess for the overlapping of the 

joining edges. 

B) 

Apply indented sheet on the underlying section of piping and glue the joining 

edges with the appropriate K 420 adhesive.The indentation should open up on 

contact with the lower disk of the flange b1). 

C) 

Cut out an indented ring (see reference on page 05) and apply it to the lower 

piping behind the flange disk, in a way that it closes the indentation of the sheet 

of the pipe previously placed. 

Abundance 

On the parts in contact with the flange, fix the disk with K 420 adhesive all along 

the delimitation areas of the diameters and of the cuts (c1). 

D) 

With the correct paste glue the indentation of the ring and bend it onto the 

body of the flange (d1 - d2). 




A 

B C D 

b1 

c1-see pag. 05 

d1 

d2 



5

E) 

Prepare a strip of IC / IN CLAD sheet of the size of the circumference of the entire valve, plus 5 

cm of excess for the overlapping of the joining edges and an indentation on the upper part. 

Apply the sheet around the whole valve and glue the joints with K 420 adhesive.e1). 

Abundance 

Glue the indentation and bend it onto the flange fixing it with K 420 adhesive (e2). 

F) 

Prepare a second ring with an internal indentation and an opening cut to allow for positioning (f1). 

Place the ring against the upper flange disk in a way that the internal indentation opens up on the 

unfinished pipe f2). Glue the joints with K 420 adhesive f3). 

f1 




E 

e2 

e1 

f2 

F 

f3 



5

G) 

Prepare a strip of IC / IN CLAD sheet of the size of the circumference of the 

entire valve, plus 5 cm of abundance for the overlapping of the joining edges. 

G 

Abundance 

H) 

Apply the sheet around the pipe and flush to the flange disk to secure 

the indentation left visible in F). 

Join the overlapping edges with the appropriate paste. 

I) 

Fix all the joints with the specific IC CLAD adhesive tape. 

L) 

For external applications, if necessary, seal the edges of the tapes 





H 

I L 



5

The K-FLEX pre-shaped flanges are formed by a sectioned body of 

elastomeric insulation already covered with IC CLAD sheet, in black 

or silver.They include an adhesive overlap for fixing the two parts 

along the seperating cut. 

A 

A) 

Glue the cut elastomeric edges with K420 adhesive. 

B) 

Apply the two perforated parts on the flange keeping in mind that the 

overlappings are part of the upper section, in order to turn the 

superimposition against water. 

C) 

Close the glued elastomer sides to seal the pre-shaped part. 

Remove the protective silicone paper of the overlap and fix the 

closure of the finishing. 


Finishing with K-FLEX pre-shaped flange 

already finished with IC CLAD sheet 


B 

C 



5

D) 

Fix with the specific IC CLAD adhesive tape 

all the visible joints, including those of the 

pre-shaped parts. 

E) 

For external applications, if necessary, seal the edges of 

the tapes with marine silicone. 


Finishing with K-FLEX pre-shaped flange 

already finished with IC CLAD sheet 


D 

E 



5



5




VALVES 


IC CLAD - VALVES 01 

6

INDEX 

Valves: insulation and finishing 

- Introduction: Application references - Key 

Finishing of vertical valve 

Finishing of valve with valve facing downwards 

Finishing of valve with valve facing upwards 

K-FLEX IC CLAD - VALVES 

Application of pre-shaped K-FLEX IC CLAD valves 

page 

03 

04-10 

11-16 

17-22 

23-25 



6

For the detailed preparation 

of the insulation of valves, 

see the references to the relevant 

sections of the “K-FLEX APPLICATION 

GUIDE”. 


If you are not in possesion of a printed 

guide you can ask for it at our technical 

office or download the pdf file from 

our website 

www.kflex.com 





In the application sequence, the IC CLAD SR (Silver) is represented. 










the finishing 

Measurements to be taken 



6

• Cut out the two sections of IC / IN CLAD 

sheet for the finishing of the two parts 

of the piping (1-2) leaving an abundance of 

5 cm for the overlap. 

• Install the two sections of sheet on the 

tubes, folding the indentation on the 

upper and lower edges of the valve’s body. 

Fix the overlap (3-4) and the indentation (5) 

with K 420 adhesive. 

1 

2 




Abbondanza Abbondanza 

5 

3 

4 



6

• Cut out a ring, the diameter of 

the cylindrical body of the valve, 

with the external indentation and 

the central hole corresponding to 

the diameter of the tubes already 

covered (1). 

• Make an opening cut (c) 

on the indented ring and place it 

on the lower edge of the valve. 

Fold the indentations on the 

cylindrical body of the valve and 

fix it with K 420 adhesive (2-3-4). 

1 

c 



b 

a a 


b 

3 

2 

4 


IC CLAD - VALVES 

6 

05

• Cut out an indented disc for the finishing 

of the front part of the stuffing box , with 

a central hole coresponding to the 

support of the manual control device.(b). 

On the shaped ring also make an opening 

cut (c). 

• Place the ring on the front of the stuffing 

box and fix it with K 420 adhesive (d). 

Fold the indentations on the cylindrical 

body of the stuffing box and fix them with 

K 420 adhesive (2-3-4). 



1 

a b 

b a 


c 

2 

2 

3 

d 

4 



6



• With the appropriate template cut out the finishing of the stuffing box body, leaving an excess for the overlapping of the joints. (1-2). 

On the curved part of the shape make an indentation of at least 5 cm. 

• Apply the shape on the stuffing box opening the indentation onto the body of the valve. 

Fix the finishing with K 420 adhesive (3-4-5). 

Abundance 

1 2 


4 

3 

5 



6

c 

d 

b 



• Cut out the covering of the valve’s body (1), taking the measurements of the indicated diameters (a-b-c), and leave an abundance for the overlap of the joints . 

On the coresponding side on the upper part, add the indentation. Make an opening cut in the shape (d) to allow for installation. 

• Place the shape around the valve’s body, folding the indentation on the upper part (2) 

• Fix the finishing parts with K 420 adhesive (3-4). 

a 

1 


Abundance 

a 

A2 

2 3 4 

c 

b 



6

• Measure the indicated diameters (a-b) and trace a ring on a section 

of IC CLAD sheet for the finishing of the upper part of the valve’s 

body. 

Cut out the ring and make an opening cut. (c). 

• Apply the ring on the upper part of the valve’s body 

and fix it with K 420 adhesive. 




a 

b 

c 

a 

b 



6

• Fix all the joints with the specific IC CLAD adhesive tape (1). 

• For external applications, if necessary, seal the edges of the joints with marine silicone (2). 



1 2 




6


Valve finishing with valve box facing downwards 

1) Cut out two sections of IC CLAD sheet (I-II) of a length coresponding to the circumference of the straight insulated pipes (a). 

Make the indentation along the side that will be placed on the valve, with an abundance of 5 cm for the overlapping 

of the longitudinal joints. 

2) Apply the sections on the repective pipe with the indentation folded onto the external flange disks of the valve’s body (b). 

The longitudinal joints, turned against water (c), and the indentations should be fixed with K 420 adhesive. 

circonferenza del tubo 

a 

abbondanza 

I 

1 

II 

abbondanza 

b b 

b b 

b 

c c 

b b 


I 

2 

b 

II 

a 



6



1) Measure the diameters indicated (a-b ) and cut out the two covering rings of the flange of the valve’s body, with external indentation and an opening cut (c). 

2) Place the rings, one on each side (d). 

3) Fold the indentation onto the valve’s body (e). Fix the two rings and the respective indentation with K 420 adhesive. 

1 2 3 

a 

b 

c 

b a 

d d 


e 



6



1) Take the measurements indicated and cut out the shape of the frontal disk of the stuffing box. Also make an opening cut (d). 

2) Place the shape on the frontal disk (2) 

3) Fold the indentations onto the body of the stuffing box. Fix the indentation and the disk front with K 420 adhesive. 

1 

a 

b 

d 

c 

b 


c 

2 3 

a 

d d 



6



1) With the appropriate template (a) cut out a section of IC CLAD sheet (b) for covering the body of the stuffing box. 

Shape an indentation along the curved part and leave an excess for the overlapping of the logitudinal joints. 

2) Place the shape on the stuffing box folding the indentation onto the valve’s body. 

Fix the longitudinal joints and the indentation with K 420 adhesive. 

circumference of stuffing box 

c 

a 

1 

abundance 


b 

2 

c 



6

1) Cut out the covering of the valve’s body taking the measurements indicated (a-b-c-d). 

Leave an excess for the overlapping of the joining edges. Also make an opening cut (e). 



2) Place the shape around the valve’s body, overlapping the edges of the longitudinal joints against water (f). 

circumference of the valve’s body 

a 

abundance 

1 

e 

d 

c 

b 


f 

d 

c 

b 

f 

2 

Fix the shape onto the valve’s body 

with K 420 adhesive. 

a 



6

• Fix all the joints with the specific IC CLAD adhesive tape (1). 

• For external applications, if necessary, seal the edges of the joints with marine silicone (2). 

1 




2 



6


Finishing of valve with valve box facing upwards 

1) Shape two sections of IC CLAD sheet of the indicated dimensions. 

Make the indentation along the side in contact with the valve and the abundance for the overlap of the longitudinal joints. 

2) Apply the shapes on the respective pipe with the indentation folded onto the disks of the external flanges of the valve’s body (d). 

The longitudinal joints, turned against water (e) and the indentations should be fixed with K 420 adhesive. 

1 

circumference of tube 

a 

I 

II 

b 

length of tubes 

abundance 

b 

I 

d d 

d d 

d 

e e 

d d 


2 

d 

II 

a 

f 



6



1) Measure the indicated diameters (a-b) and cut out two rings for covering the flanges of the valve’s body, with external indentation and an opening cut (c). 

2) Fit the rings in, one on each side in contact with the valve’s boby flanges. 

3) Fold the indentations onto the body of the valve (d). Fix the indentations and the joining edges with K 420 adhesive. 

1 2 3 

a 

b 

c 

b 


a 

d 

d 

d 

d 



6



1) Take the measurements indicated and cut out, from a section of IC CLAD sheet, the covering for the valve’s body. 

Shape an indentation on the inside of the hole and leave an abundance for the overlapping of the longitudinal joints. 

Make an opening cut to place the shape around the stuffing box (c). 

abbondanza 

b 

1 2 

a 

a 

e e 

e e 


c 

b 

2) Apply the shape onto the valve’s body 

turning the joining overlap against water (d). 

Fold the indentation onto the stuffing box (e). 

Fix the joints and the indentation with K 420 

adhesive. 



6



1) Take the measurements indicated (a-b) and, with the correct shape, cut out the covering of the valve box from IC CLAD sheet, 

Leave an abundance for the overlap of juntion and make an indetantion in holder to fix valve box 

2) Apply the shape around cylindrical body. Superimpose the overlapping edges (c) and fold the indentation onto the disk of the valve box (d). 

circumference of the stuffing box 

abundance 

a 

1 2 

b 


b 

d 

d 

c 

a 

Fix the parts with K 420 adhesive. 



6



1) Take the measurements indicated (a-b-c) and cut out, from a section of IC CLAD sheet, the shape of the frontal disk of the valve box. 

Make an opening cut (d) to allow for assembling. 

2) Fit the shape onto the frontal disk of the stuffing box and fix it with K 420 adhesive. 

c 

1 2 

b 

a 

d 


c 

b 

a 



6

1) Fix the joints with the specific IC CLAD adhesive. 

1 




2 

For external applications, if necessary, seal the edges of the tapes with 

marine silicone. 



6

The pre-shaped K-FLEX IC CLAD valve has an elastomeric body 

divided in two specular sections covered with IC CLAD sheet of 

either black or silver in colour. 

The shape includes an adhesive overlap for fixing the closure during 

installation. 

1) Glue the elastomer edges along the separating cut. 

1 


Finishing with pre-shaped valve 

covered with IC CLAD sheet 


2 

• Install the two specular sections so they contain 

the valve and close the glued elastomer edges(2). 



6

• Remove the protective silicone paper of the adhesive 

overlaps and fix the closure of the finishing parts. 







6

• Fix all the joints, including those of the pre-shaped part, with the 

specific IC CLAD adhesive tape (1). 




1 2 


• For external applications, if 

necessary, seal the edges of the 

tapes with marine silicone. (2). 



6




REDUCERS 


IC CLAD - REDUCERS 01 

7

INDEX 

Reducers: insulation and finishing with IC CLAD sheet 


Finishing of reducers facing upwards 

Finishing of reducers facing downwards 

K-FLEX IC CLAD - REDUCERS 

page 

03 

04 

05 



7

For the detailed preparation 

of the insulation of reducers, 

see the references to the relevant 

sections of the “K-FLEX 

APPLICATION GUIDE”. 


If you are not in possesion of a printed guide 

you can ask for it at our technical office or 

download the pdf file from our website 

www.kflex.com 

K-FLEX IC CLAD - REDUCERS 





represented. 



K-FLEX IC/ IN CLAD APPLICATION GUIDE 







the finishing 




7

3 

2 

1 


Finishing of reducers facing upwards 

• From three sections of IC / IN CLAD sheet cut out the three parts needed to complete the finishing of the reducer (A1-2-3), leaving an abundance of 5 cm 

for the overlapping of the joints. Parts 1-2 need the indentation to cling to the respective upper part. 

• Finish off the first section of piping (B1) fixing the joining edges with K-420 adhesive. 

• Finish off the central section of the reducer (C2) fixing the joining edges with K-420 adhesive. Parts C2 overlap the indentation of parts B1. 

• Finish off the upper section of the reducer D2) fixing the joining edges with K-420 adhesive. Parts D3 overlap the indentation of parts C2. 

It is important to closely follow the 

described installation sequence of 

the parts to face the overlaps 


E) 

• After fixing the parts, cover the 

joints with the specific IC CLAD 

adhesive tape. 

For external applications, if 


tapes with marine silicone. 

A B C D E 


1 

2 

3 



7

E) 

2 

1 


Finishing of reducers facing downwards. 

From three sections of IC / IN CLAD sheet cut out the three parts needed to complete the reducer (A1-2-3), leaving an abundance of 5 cm for 

for the overlapping of the joining edges. Parts 1-2 need the indentation to cling to the respective upper part. 

B) Finish off the first section of piping (B1) fixing the joining edges with K 420 adhesive. 

C) Finish off the central section of the reducer (C2) fixing the joining edges with K 420 adhesive. Part 2 overlaps the indentation of part 1. 

D) Finish off the upper section of the reducer (D2) fixing the joining edges with K 420 adhesive. Part 2 overlaps the indentation of part 1. 

It is important to closely follow the 

described installation sequence of 

the parts to face the overlaps 


• After fixing the parts, cover the 

joints with the specific IC CLAD 


For external applications, if 


tapes with marine silicone. 

A B C D E 

3 


1 

2 

3 



7




SMALL AND MEDIUM TANKS 


IC CLAD - SMALL AND MEDIUM TANKS 01 

8

INDEX 


SMALL AND MEDIUM TANKS 

Small and medium tanks: insulation and finishing with 

IC CLAD sheet 


Insulation of tanks with K-FLEX sheet 

Finishing of tanks with IC CLAD sheet 

page 

03 

04 

06 



8

For the detailed installation 

of K-FLEX insulation material, 

see the references in the 

“K-FLEX APPLICATION GUIDE”. 



printed guide you can ask for it at 

our technical office or download the 

pdf file from our website 

www.kflex.com 

K-FLEX IC CLAD - SMALL AND MEDIUM TANKS 





represented. 





Parts glued with K 420 adhesive 





the finishing 




8

A) 

B) 

C) 

• Trace the shape in the same scale of the tank’s curved base with 

the appropriate subdivision in segments and the relevant quotas. 

Keep in mind the central hole for the waste pipe. 

• Trace the section of a single segment in full-size scale ,1:1 (a1). 

Leave a sufficient abundance on the external edge (a2) to accomodate 

the roundness of the base. 

• Cut out mant segments of K-FLEX sheet, of a necessary quantity 

to complete the covering of the base, and place them on the tank 

glueing them with K 420 adhesive (b1). 

• With the same adhesive glue the joints between one segment and 

another. 

• If necessary, cut out and apply a joining ring around the waste pipe, 

with elastomeric material. 

• Repeat the operation for the insulation of the cover, taking into 

consideration the possible variations compared to the base. 

The insulation of the 

accessory parts on the tank 

can be carried out before or 

after the covering of the walls. 

The installer will decide 

based on his own experiance. 

The accessory parts, usually of 

a cyndrical shape, are insulated 

with appropriate sections of 

K-FLEX sheet cut to size and 

applied with K 420 adhesive. 


Insulation with sections of K-FLEX elastomeric sheet 

A 


a1 

a2 

B 

b1 

C 



8

1 

2 


Insulation with sections of K-FLEX elastomeric sheet 

• From a K-FLEX sheet cut out the covering sections of the tank’s wall (1-2), 

with the appropriate opening for the accessory parts. 

• Apply the shaped sections around the wall of the tank glueing them with K 420 adhesive.With 

the same adhesive also glue the joining edges between the sections. 

Glue with K 420 adhesive the joints between the segments (of the base and cover) and the 

sheet sections applied ti the wall. 

Give particular care to the joints.A precise job without distortions, obtained during the 

insulation stage, will prove to be valuable during the application IC CLAD finishing. 


1 

2 



8

A) 

B) 

C) 

• Trace the outline in scale of the base of the tank with the correct 

subdivision in segments and the relevant quotas. 

Keep into consideration the central hole of the waste pipe. 

Leave on the outer edges an abundance sufficient to attach the segment 

to the wall of the tank a1). 

• Trace the section of a single segment with relevant abundance to allow 

overlapping of the joint (a2), 

• Cut out many segments of IC CLAD sheet, enough necessary to complete 

the covering of the base. 

• Apply the segments on the insulation glueing the parts and the overlappings 

of the sheet with K 420 adhesive (b1). 

• Apply the finishing also onto the joining ring around the waste pipe. 

A 

a2 

a1 


Finishing with sections of IC CLAD sheet 


B 

b1 

C 



8

Finishing of the accessory parts 

• From a IC CLAD sheet cut out the 

sections of sheet A-B to cover the 

accessory parts positioned on the wall 

of the tank. 

The parts should be glued with 

K 420 adhesive. 

A 

B 




B 



8

1 

2 

• From a IC CLAD sheet cut out the covering sections of the tank’s wall,with the 

appropriate abundance for overlaying the joints and the openings for the accessory 

parts already insulated. 

• Apply the sections around the wall re-covering the indentation of the finishing of 

the accessory parts. 

Glue the edges and the overlappings with K 420 adhesive. 




1 

2 



8

As previously illustrated for the base of the 

tank, construct the segments of IC CLAD 

sheet for the finishing of the cover. 

• Apply the segments with bicomponent 

adhesive, folding the abundance over the wall 

finishing. 

• Complete the finishing with the joining ring 

positioned around the vent-hole. 

• Also the pipe should be covered, bearing in 

mind its particular shape, turning the joints 


• Fix all the visible joints of the finishing with 

the specific IC CLAD adhesive. 



A B C 




8




LARGE TANKS 


IC CLAD - LARGE TANKS 01 

9

INDEX 

Large tanks: 

insulation and finishing with IC CLAD sheet 


-Insulation with K-FLEX elastomeric sheet 

Finishing of tanks with IC CLAD sheet 


LARGE TANKS 

-Insulation and finishing with K-FLEX elastomeric sheet 

covered with IC CLAD sheet. 

page 

03 

04-5 

06-10 

11-19 



9

For detailed application of 

K-FLEX insulation sheets see the 

references in the 

“K-FLEX APPLICATION GUIDE”. 






www.kflex.com 

K-FLEX IC CLAD - LARGE TANKS 




THE APPLICATION EXAMPLE REFERS TO A 

SEMPLIFIED STRUCTURE OF A LARGE 

STANDARD CYLINDRICAL TANK, INSTALLED 

OUTSIDE. 


represented. 



K-FLEX IN CLAD APPLICATION GUIDE 







the finishing 




9

Insulation of the tank’s wall 


Insulation with K-FLEX elastomeric sheet 

For the insulation of a large external tank use the K-FLEX IC 

CLAD elastomeric sheets (of 1 m in height), cut in a length 

calculated to exactly cover the size of the circumference. (example: 

40 sections of 1,5 m for a circumference of 60 m). 

Before applying the insulation sheets it is wise to carefully clean 

the surface of traces of dirt, grease and oil so as not to hinder 

adhesion. 

Place the sheet sections in a circular manner (a) starting from the 

bottom and working towards the top (b). 

Vary the arrangement of the vertical joints for greater absorption 

of the expansion of the insulation. 

Apply the next ring of sheets only when the previous one 

is perfectly aligned and glued. 

The surface that comes into contact with the sheets should be 

glued with K 420 adhesive. 

With the same adhesive glue together the edges of the adjacent 

sheets. 

Exert the correct amount of pressure on the edges, avoiding 

tension and destortions, to allow for correct adhesion and to add 

to its aesthetic value. 

At the top of the cylindrical wall apply sheets cut in heights to 

coincide with the tank. 


b 

a 



9

Insulation of the tank’s roof 


Insulation with K-FLEX elastomeric sheet 

• For the finishing to apply onto the roof of the tank, use sheets of 1 m 

(corresponding to that of the finishing sheet) placed ina way to cover 

the entire surface. 

• With careful planning (it is advisable to prepare a diagram to 

calcolate the correct dimensions of the project) the elastomeric 

sheets can be placed in a functional manner. 

The laying of the sheets will in fact be useful as a guide during the 

application of the sheets, making the next phase easier. 

• Place the K-FLEX elastomeric sheets starting from the outer sheet 

(a)towards the center.The rounded edges of the outer sections will 

follow the curvature of the tank. 

• Place the sheets after having cleaned the surface of the tank of traces 

of dirt, oil and grease so as not to jeopardize adhesion. 

• The surface where the sheets come into contact with the tank 

should be glued with K 420 adhesive. 

With the same adhesive glue together the edges of the adjacent 

sheets. 

Exert the correct amount of pressure on the edges, avoiding tension 

and destortions, to allow for correct adhesion and to add to its 

aesthetic value. 

• To avoid detachments and infiltrations, the insulation of the tank’s 

walls together with the perimetrical joints must be carefully sealed. 

The insulation of the roof must overlap the perimetrical insulation. 


a 



9

Finishing of the tank’s wall 

• For the finishing of the tank re-trace the plan of 

the elastomeric sheets already in position.Take 

the measurements of the elastomeric sheet and 

cut out the section of corresponding IC CLAD 

sheet, leaving the correct abundance for the 

overlapping (a). 

• Place the sheet sections over the elastomeric 

sheets following the circular direction starting 

from the bottom and working towards the top. 

Apply the next ring of sheets only when 

the previous one is perfectly aligned and 

glued. 

• Glue the joints with K 420 adhesive and fix 

them with the specific IC CLAD adhesive tape. 


Finishing with IC CLAD 


b 

a 

a 

 

 

 

 

 

 

• Il overlapping of the abundances should always be placed above the 

underlying sections (a) to allow water to flow above the joints ( ). 

• Also leave overlapping abundances between horizontal adjacent sheets, 

always on the same part, for practical and aesthetic reasons b). 

b 

b 

a 

 

b 



9

Finishing of the top of the wall 

• On the top of the wall an indentated ring of IC CLAD sheet must be applied 

to protect the angle with the roof of the tank B). 

A 

• Apply the sections of IC CLAD sheet 

correctly joined by overlapping edges a), 

to which an indentation will be made, 

folded at 90° above the level of the roof. 

Glue them with K 420 adhesive and fix 

the joints with IC CLAD adhesive tape. 

a 


Finishing with IC CLAD sheet 


B 

• Calculate the number of IC CLAD sheet sections that will be used 

to complete the circumference of the tank (C). 

C 



9

Finishing of the tank’s roof 



For the finishing to apply onto the roof, cover each K-FLEX elastomeric sheet, already previously placed, 

with sections of IC CLAD sheet. 

The example shown illustrates starting the covering from the circular area a) continuing gradually 

with the internal areas proceeding towards the center, rispecting a criteria of overlapping 

the joints in an orderly and functional manner to allow the water to flow from the center of the roof towards 

the edges of the tank b). 

• For the finishing of the tank’s roof 

retrace the pattern of the elastomeric 

sheets already in place.Take the 

measurements of the elastomeric 

sheet and cut the section of the 

corresponding IC CLAD sheet , 

leaving the correct abundaces for the 

overlapping (a). 

•First place the outer sheet sections 

and then gradually proceed towards 

the center of the roof, overlapping 

each sheet to those placed before. 

In this way even the slight difference 

in level of the overlappings will allow 

the water to flow towards the outside 

( ). 

 

• Glue the joints with K 420 adhesive 

and fix them with the specific IC 

CLAD adhesive tape. 

 

 

 

 

 

 



IC CLAD - LARGE TANKS 

9 

08

For the outer sheet sections it is necessary to protect also the the thickness of the curved side 

with IC CLAD finishing, turned towards the outside. 



To allow the flow of the water out of the perimetrical edge, an extra abundance must be created 

(a) including the thickness of the K-FLEX sheet plus an extra 5/10 cm needed for an adequate 

overlapping of the sheet to the wall below (b). 

If necessary, make a cut in the overlap (c) to absorb the tension of the curvature. Glue the overlap 

with K 420 adhesive and fix the joints with the specific IC CLAD adhesive tape. 

a 

c 

c 


b 


IC CLAD - LARGE TANKS 

9 

09

If necessary, accurately seal the edges of the tapes with marine silicone. 






9

GENERAL INDICATIONS FOR THE 

APPLICATION OF K-FLEX IC CLAD SHEET 

ONTO LARGE TANKS: 

-On the large surfaces of the tanks, the use of sheet 

should be rationalized first of all according to its 

dimensions. 

Since it is supplied in rolls of 1 m in height, the sheet should 

be used in sections of 1 m by X m in length. 

It is advisable to keep the length to a size as to allow for 

easy manual control during installation. 

Geometric precision is in fact of great importance whilst 

working, in order to maintain even alignment of the joined 

sections. 

The overlaying of joints between the subsequent sections 

should always be prepared against water and in a pleasing 

aesthetic way to create a satisfying end result. 

K-FLEX IC CLAD: CONTROLLING MATERIAL COSTS 


Insulation and finishing with K-FLEX elastomeric sheet 


CALCULATE THE MEASUREMENTS EXACTLY 

Decide how many sections of K-FLEX IC CLAD sheet 

are needed to cover the circumference. 

Example; for a circumference of 60 m (a) you need: 

40 sections of 1,55 m (1,5 m working length + 5 cm od 

abundance) 

Another factor not to neglect is the remaining material produced from a roll of K-FLEX IC CLAD sheet. 

Insulation with K-FLEX sheets, thanks to the abaptability of the material, always allows you the possibility to re-use the remaining material during a previous operation. 

Example: from a roll of 20 m you can obtain 12 sections of 1,55 m with a left over of 1,40 m.This material can without doubt be used for the sections of 

covering for the roof of the tank which has differing dimensions.At the end of the job, the remaining material will be very little. 


a 


IC CLAD - LARGE TANKS 11

Covering the wall of the tank 

For the covering of the tank’s wall you need to prepare the sections of K-FLEX IC CLAD to obtain 

an abundance of 5 cm to overlay the adjacent sections. 

Prepare the abundances on the lower side and on the right of the sections (a-view from the side 

of the finishing). 

Seen from the the elastomer parts, the right part appears inverted (b). 

• Trace the two cutting lines on the elastomer and with a blade cut until making contact with the 

IC CLAD sheet. 

• Remove the elastomeric part (5 cm) from the sides of the relevant abundance and clean the sheet 

of the residuals.The operation is fairly easy and quick. 

The section is now ready for application. 

The sections of K-FLEX IC CLAD should be applied on the tank’s wall with 

K 420 adhesive, for the elastomeric parts and for the overlapping parts of the finishing, 

The glued edges of the finishing are fixed with the specific IC CLAD adhesive tape. 





a 

b 



9

Covering of the tank’s wall 

Before applying the K-FLEX IC CLAD sheets it is advisable to 

carefully clean the surface of traces of dirt, grease and oil to allow 

for proper adhesion. 

Place the sheet sections in a circular fashion (a) starting from the 

bottom and working towards the top (b). 

Vary the arrangement of the vertical joints for greater 

absorption of the expansion of the insulation. 

Apply the next ring of sheets only when the previous one 

is perfectly aligned and glued. 

At the top of the wall, a special operation is needed 

for the connection with the roof of the tank, which we will come to 

further on, when we have defined the application method for the sections 

placed onto the wall. 




KEY: K420 adhesive Marine silicone Measurements Actions 

b 

a 



9

Covering of the tank’s wall 

• The joints are glued with K 420 adhesive and are 

fixed with the specific IC CLAD adhesive tape. 





• Il overlapping of the abundances should always be 

placed above the underlying sections (a) to allow water 

to flow above the joints ( ). 

b 

a 

 

• The overlapping abundances between horizontal 

adjacent sheets should always be placed on the same 

part, for practical and aesthetic reasons b). 

a 

 

 

 

 

 

 

b 

b 

a 

b 



9

Covering the top of the tank’s wall 

d 

b 

a 

K-FLEX IN CLAD - LARGE TANKS 



• On the top of the wall apply sections of IC CLAD sheet correctly joined on overlapping edges (a), on which will be made an 

indentation (b) which will be folded 90° above the surface of the roof and fixed with K 420 adhesive (c). 

The lower part should have an abundance for the overlapping of the underlying sections (d). 

a a a 


b 

Calculate how many sections of sheet are needed to cover the top 

of the tank. 

C 

b 



9

Covering the top of the tank’s roof 

• For the finishing to apply on the roof of the tank, use sheets of 1 m 

in height (corresponding to that of the K-FLEX IC CLAD sheets) 

placed to cover the whole surface. 

• With careful planning (it is advisable to prepare a diagram to 

calcolate the correct dimensions of the project) the elastomeric 

sheets can be placed in a functional manner, to allow for gradual 

overlaying folded towards the external parts and to help the flow of 

water towards the walls of the tank. 

• Place the K-FLEX elastomeric sheets starting from the external layer 

(a) towards the center.The rounded edges of the external sections 

should follow the curvature of the tank. 

• Place the sheets after having cleaned the surface of the tank of traces 

of dirt, oil and grease, so as not to jeopardize adhesion. 

• The surface where the sheets come into contact with the tank 

should be glued with K 420 adhesive (b). 

Glue together the overlapping edges of the adjacent sheets (c). 

In the joining edges of the sections, avoid tension and distortions, 

to allow for correct adhesion and to add to its aesthetic value. 

• To avoid detachments and infiltrations the insulation of the walls of 

the tank must be carefully sealed to the perimetrical joint. 

The insulation of the roof must overlap the perimetrical insulation (d). 

c 

Glue together the overlapping edges of the adjacent sheets (c). 

b 

d 





a 

for the preparation of the covering 

K-FLEX IC CLAD sections see the 

following pages. 



9

Preparation of the external K-FLEX IC CLAD covering sections 

For the external K-FLEX IC CLAD sections it is necessary to also protect the thickness 

of the curved side, turned towards the outside. 

In order to allow water to flow out the external edge, it is necessary to allow on the curved side 

another abundance (a) which includes the dimension of the K-FLEX sheet’s thickness 

plus 5/10 cm needed for an adequate overlapping to the sheet of the underlying wall (b). 

If necessary, make a cut in the overlap (c) to absorb the tension of the curvature. 

Glue the overlap with K 420 adhesive and fix the joints with the specific IC CLAD adhesive tape. 

a 

c 

c 





b 



9

Preparation of the internal covering K-FLEX IC CLAD sections 

• Take the measurements of the 

elastomeric sheet and cut out the 

section of corresponding IC CLAD 

sheet, leaving the correct abundance for 

the overlay (a). 

• Remove the elastomeric part from the 

areas of the abundance (also see pag. 3). 

• First place the external sheet 

sections* and then proceed gradualy 

towards the center of the roof , 

overlaying every sheet to those layed 

before. 

In that way the slight difference in level 

of the overlapings will allow water to 

flow towards the outside ( ). 

 

• Glue the joints of the IC CLAD 

sheet with K 420 adhesive and fix 

them with the specific IC CLAD 


*For the preparation of the external bands, see the following page. 

a 

a 

 

 

 

 

 

 







9




Accurately seal all the joints and the edges of the tapes with marine silicone. 

The longevity of the finishing depends very much on the care and attention with which this operation is initially carried out. 




9

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